Function: getTopElements()

getTopElements(elements): GfxModel[]

Get the top elements from the list of elements, which are in some tree structures.

For example: a list [G1, E1, G2, E2, E3, E4, G4, E5, E6], and they are in the elements tree like:

    G1         G4      E6
   /  \        |
 E1   G2       E5
      / \
     E2  G3*
        / \
       E3 E4

where the star symbol * denote it is not in the list.

The result should be [G1, G4, E6]

Parameters

GfxModel[]

GfxModel[]